Nowadays, as it is something popular to be allergic to certain foods. People are usually intolerant to lactose or gluten. Although many people will just “roll” their eyes when they hear about this, gluten can actually cause a serious problem. It is important to note that gluten intolerance is not actually an allergy, but a sign that there is a problem with the gastric acid.
Headaches are common in people who are intolerant to gluten. Usually occur 30-60 minutes after meals.
If there is a problem with the digestive tract, it can sometimes manifest itself in itching, eczema, dry or irritated skin.